Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

“…Several spectroscopic methods have been utilized to detect and measure small amounts of heavy metals, most of which suffer from expensive instruments, huge arrangements, and highly skilled operators. While optical approaches are fast and facile for determining heavy metals 4,5 , electrochemical techniques have some advantages and benefit from remarkable sensitivity [6][7][8][9][10][11][12][13][14][15][16] . In addition, the inconvenience of storing and moving samples is eliminated using existing portable tools.…”

Fe3S4 nanoparticles wrapped in a g-C3N4 matrix: an outstanding visible active Fenton catalysis and electrochemical sensing platform for lead and uranyl ions

“…7,8 It is believed that g-C 3 N 4 has great prospects in the catalysis and adsorption of heavy metal ions and dyes. [9][10][11][12][13][14] Adsorption is the surface phenomenon in which an adsorbate molecule/ion selectively accumulates at the interface, especially on a solid surface. In the field of wastewater treatment, adsorption and advanced oxidation processes (AOPs) are the two most common and effective technologies developed thus far.…”

Electrochemical detection of Pb(ii) and Cd(ii) using bismuth ferrite nanoparticle modified carbon paste electrodes

“…26 In recent years, chemically modified electrodes have been used strategically to improve the conductivity, selectivity, sensitivity, stability and surface area of the working electrode. 21,[27][28][29] Carbon paste electrodes (CPEs) have recently attracted a lot of attention due to their benefits such as low background current, easy preparation, quick surface renewal and bulk modification capability. 30 Chemically modified CPEs have been used in stripping analyses to improve electrochemical responses because of these advantages.…”

“…30 Chemically modified CPEs have been used in stripping analyses to improve electrochemical responses because of these advantages. 21 Different chemically modified electrodes based on polyamidoamine dendrimer functionalized iron oxide nanoparticles/ CPE, 21 graphene/gold nanoparticles/modified L-cysteine nanocomposite/GCE, 23 Fe 3 O 4 /Bi 2 O 3 /C 3 N 4 nanocomposite/GCE, 27 engineered MWCNTs/GCE, 31 Bi/MWCNT-emeraldine base polyaniline-Nafion composite/GCE, 32 BiOCl/MWNT/GCE, 33 and bismuth nanoparticles/GCE 34 are among the electrode materials reported for the simultaneous determination of lead and cadmium in different matrices.…”